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Inclined upward mountain combined downward access cemented filling mining method
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CN112196617A
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Simple combined filling retaining wall construction method
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CN112177613A
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Sector medium-diameter deep hole mining process for steeply inclined medium-thickness ore body
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CN112196537A
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Medium-diameter deep hole composite slot drawing process for steeply inclined medium-thickness ore body
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CN112177612A
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Downward high-layering cemented filling mining method
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Dressing and smelting method for recovering talc from talc-containing nonferrous metal ore flotation desliming product
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Energy-absorbing yielding type steel support and supporting process thereof
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CN112253183A
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Energy-absorbing profiling active support structure for arch roadway and support method thereof
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CN112113474A
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Partially recyclable blast hole measuring and plugging device and application method thereof
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CN111894670A
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Bag type stacked drainage filling retaining wall and construction method thereof
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CN112014276A
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Detection method for layered segregation degree of filling body and model construction method
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CN111888805A
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Paste storage thickener and thickening process
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Filling slurry preparation system and preparation method thereof
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CN111894667A
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Upward double-layered drift filling mining method for recoverable support shield of broken ore body
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CN111878067A
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Simple device for measuring inclination angle of drilling hole opening
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CN111894592A
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Wall column type upward horizontal layered filling mining method
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CN112008866A
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Multi-micro-powder pre-pulping adding process and conveying system thereof
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Quality detection and sampling device for filler permeated water and using method thereof
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CN111686621A
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Multi-material powdery additive preparation system and preparation method
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CN111829968A
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Multi-stage transient dynamic performance measuring device of laser gas concentration measuring sensor
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